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Solar Cool SCO-12G Service Manual

Reverse cycle solar pv-inverter
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MALAYSIA'S FIRST
REVERSE CYCLE SOLAR PV-INVERTER

AIR CONDITIONER

service MANUAL

Model: SCO/SCI-12G

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Summary of Contents for Solar Cool SCO-12G

  • Page 1: Air Conditioner

    MALAYSIA’S FIRST REVERSE CYCLE SOLAR PV-INVERTER AIR CONDITIONER service MANUAL Model: SCO/SCI-12G...
  • Page 4 SCI-12G SCO-12G YAG1FB...
  • Page 5 SCO/SCI-12G SCO/SCI-12G...
  • Page 6 SCO-12G...
  • Page 7 Cooling Heating Conditions Conditions Indoor:DB27 WB19 Indoor:DB20 Outdoor:DB35 Outdoor:DB7 Indoor air flow High Indoor air flow High Pipe length :7.5 m Pipe length:7.5 m Voltage :230 V Voltage:230V 75 90 Compressor Speed (rps) Compressor Speed (rps) Heating Cooling Conditions Conditions Indoor:DB27 WB19 Indoor:DB20...
  • Page 8 Heating Cooling Middle High Midhigh Midlow Super High Super Low...
  • Page 9 SCO/SCI-12G...

  • Page 10: Indoor Unit

    Outdoor unit Indoor unit Gas pipe side Valve 4-Way valve Di s charge Heat Suction exchanger (evaporator) Heat exchanger Liquid pipe (condenser) side Valve Strainer Capillary Strainer COOLING HEATING...
  • Page 11 POWER MAGNET RING ROOM temperature display DC motor tube sensor sensor YEGN θ θ OFAN COM-OUT DISP1 DISP2 TUBE ROOM YEGN YEGN L-IN L-OUT JUMP K_COMP evaporator HEALTH-N cold plasma CLEAN HEALTH-L SWING-LR SWING-UD1 SWING-UD2 electrostatic SWING-LR SWING-UD SWING-UD dedusting motor 1 motor 1 motor 2...
  • Page 12 COMP W3 YEGN W8 YEGN COMP θ θ θ W5 BU W6 YE W7 RD 4V AC-L2 W19 BU OVC-COMP T-PIPE OUTROOM OUTTUBE W18 BN W2 BU N(1) W4 BK COMU W1 BN AC-L1 OFAN IND2-2 IND2-1 IND1-2 IND1-1 YEGN W16 W17 ELECTRONIC (L4mH/10A)

  • Page 15: Timer On /Timer Off

    ON/OFF button FAN button MODE button +/- button TURBO button button button CLOCK button TIMER ON/ TIMER OFF button TEMP button button (before opening cover) (after opening cover) I FEEL button ON/OFF button LIGHT button FAN button X-FAN button QUIET button MODE button SLEEP button +/- button...
  • Page 16 ATUO Low fan Medium-low fan Medium fan Medium-high fan High fan AUTO COOL HEAT...
  • Page 19 battery reinstall remove Cover of battery box...
  • Page 26 Space to the wall Space to the wall At least 15cm At least 15cm The dimensions of the space necessary for proper ● installation of the unit include the minimum permissible distances to adjacent parts. Space to the obstruction Air inlet side 30cm Above Space to the wall...
  • Page 27 Start installation Preparation before installation Read the requirements select installation Prepare tools for electric connection location Select indoor unit Select outdoor unit installation location installation location Install the support of outdoor unit Install wall-mounting (select it according to the actual situation) frame, drill wall holes Connect pipes of indoor Fix outdoor unit...

  • Page 29: Outlet Pipe

    Wall Wall Mark on the middle of it Gradienter Space Space to the to the wall wall Open-end wrench above above Union nut Pipe Pipe joint Union nut Pipe Torque wrench Right Left Φ Φ Indoor pipe Insulating pipe Indoor Outdoor Φ...
  • Page 30 Panel Screw Wiring cover Indoor and outdoor power cord Indoor unit pipe Liquid pipe Band Drain hose connection wire sleeve Drain hose Connection pipe Band Indoor power cord blue black brown yellow- green Connect to outdoor unit ( 1 ) Wire clip Note: The wiring connect is for reference only, please refer to the actual one .
  • Page 31 N (1) YE/GN Solar power Indoor Unit Wiring board ( 1 ) Handle Drain vent Chassis Wire clip Outdoor drain join t At least 3cm above the floor Drain hose Foot holes Foot holes The drain hos can't raise upwards Wall Liquid pipe Pipe joint...
  • Page 32 The drain hose can't be fluctuant The water outlet can't be placed The drain hose in water can't be fluctuant The water outlet can't be fluctuant Liquid valve Piezometer Gas valve Valve cap Refrigerant charging vent Nut of refrigerant Charging vent Vacuum pump Inner hexagon spanner...
  • Page 34 Measure insulation resistance The breaker trips at once when it to ground to see if there is any is set to “ON”. leakage. Trip of breaker or blow of fuse The circuit or the part of the air conditioner has malfunction. They heat and break the insula- tion and lead to short circuit or The breaker trips in few minutes...
  • Page 35 Improper set of temperature Adjust set temperature If cooling (heating) load is Check the forecasted load of cooling (heating) proper Check and fill the leakage, then The refrigerant has leakage or is vacuumize it and supplement the re- insufficient frigerant as required Leakage between the high pres- Replace the compressor sure and the low pressure in-...
  • Page 36 The indoor fan motor is burned or breaks or has the heat protector Replace the fan motor or the defective part. malfunction. The built-in heat protector of the Replace the fan motor The fan does not motor breaks frequently because the run when it is set motor is abnormal.
  • Page 37 The torque of the swing motor is not enough First, check whether the connection is Wrong connection The swing fan wrong. If no, replace the parts does not run. The controller is damaged(IC2003 is damaged, the swing relay can not close, etc) C o n t r o l l e r m a l f u n c t i o n ( I C 2 0 0 3 Change controller...
  • Page 38 The PV-modules are open Check the wires and circuit. junctions of PV-modules. Measure the voltage The indoor unit The anode and cathode of between two terminals of PV displays “OF” PV-modules are reverse. system by multimeter.. The PV-modules have some Consult the PV-module troubles.
  • Page 42 9.4 How to Simply Check The Main Part Turn on the unit and wait 1 minute Use DC voltmeter to measure the voltage on the two ends of electrolytic capacitor Fault with the voltage Replace the control testing circuit on Voltage higher than 200V? panel AP1 control panel AP1...
  • Page 43 Energize and switch on Use AC voltmeter If the voltage Check the supply to measure the IPM protection between terminal L voltage and voltage between occurs after the and N on wiring machine has run for terminal L and N restore it to board XT is within a period of time?
  • Page 44 Overheat and high temperature protection Normal protection, please operate it after the outdoor ambient temp- Is outdoor ambient temperature higher than 53? erature is normalized. 20 minutes after the complete unit is powered off. Improve the heat Is heat dissipation of the indoor unit dissipation environ- and outdoor unit abnormal? ment of the unit...
  • Page 45 Power on the unit Restart it up after Is stop time of the compressor 3 minutes longer than 3 minutes? Does startup fail? Connect the wires as Are the wires for the compressor connected per the connection correctly? Is connection sequence right? diagram Replace the control panel AP1 If the fault is eliminated?
  • Page 46 Out of step occurs in Out of step occurs once the operation unit is powered on. Check if the fan terminal Is stop time of the Is the outdoor fan working Replace the fan OFAN is connected correctly compressor longer than capacitor C1 normally? 3 minutes?
  • Page 47 20 minutes after the complete unit is powered off Is the terminal FA for the Connect the electronic expansion valve wires correctly connected correctly? Resistances between the first four pins close to the terminal hole and the fifth pin are almost the same, less than 100 ohm.
  • Page 48 Start Check wiring of the reactor (L) of the outdoor unit and the PFC capacitor Replace it as per the Whether there is any wiring diagram and If the fault is eliminated? damage or reconnect the wires short-circuit? Remove the PFC capacitor and measure resistance between the two terminals.
  • Page 49 Start Did the equipment operate normally before the failure occurs? Check the wiring of the indoor and outdoor units with reference to the wiring diagram Check wiring inside of the indoor and outdoor Is the connection right? units Correctly connect the corresponding wires for The AP1 voltage Are wires broken?
  • Page 51 Start Measure voltage at the Test 10 position as shown in the diagram with a voltmeter Value jumping Measure voltage at the Test 15 position as shown in the diagram with a voltmeter Value jumping Fault with outdoor unit Measure voltage at the Test 11 position as shown in the diagram with a voltmeter...
  • Page 57 SCI-12G...
  • Page 58 Steps Procedure 1. Before disassembling the unit Before disassembling the unit. 2. Remove filter Open the panel. Loosen the clasps on filter, push the filter inward and then pull it upward, then the filter can be removed. 3.Remove guide louver Remove the axial bushing of big guidelouver.
  • Page 59 Steps Procedure Remove the rotating shaft of big guidelouver from the groove, slightly bend thebig guide louver to remove it. big guide louver Remove the axial bushing of small guidelouver. axial bushing Remove the rotating shaft of small guide louver from the groove, slightly bend the small guide louver to remove it.
  • Page 60 Steps Procedure panel, to remove the display. 5.Remove front case Remove the screws fixing electric box cover 2, to remove the electric box cover electric box cover 2 screw screw clamp Remove the screws fixing front panel, loosen the clamps, to remove the front panel.
  • Page 61 Steps Procedure 6.Remove swing fan blade Loosen the clamps fixing swing connecting rod, to remove the swing connecting rod. clamp swing connecting rod clamp remove the swing fan blade. swing fan blade 7.Remove electric box sub-assy heat exchanger thermistor Remove the indoor tube temp. sensor. earth wire Remove the screws fixing earth wire, to remove the earthwire.
  • Page 62 Steps Procedure to remove the cover. electric box cover electric box cover sub-assy screw Remove every wiring terminals, and remove the electric box cover sub-assy. 7.Remove evaporator sub-assy auxiliary piping pipe clamp Remove the screws fixing connection pipe clamp, to remove the connection pipeclamp. screw screw...
  • Page 63 Steps Procedure auxiliary piping Remove the screws fixing evaporator sub-assy, slightly regulate the tube, to remove the evaporator sub-assy. evaporator sub-assy 8.Remove cross fan blade and motor motor, to remove the motor. up&down swing motor to remove the motor. left&right swing motor...
  • Page 64 Steps Procedure Remove the screws fixing motor clamp, to remove the motor clamp. screw motor clamp Remove the cross fan blade and motor. bearing cushion rubber base Remove the shafting bearing cushionrubber base cross fan blade motor bladeandmotor, and then remove the motor.
  • Page 65 (Note:This model hasn't valve cover. )
  • Page 66 4. Remove panel and grille Remove the screws fixing panel, to remove the panel. Remove the screws connecting panel grille and panel, loosen the clamp, to remove the panel grille. panel grille 5. Remove valve cover Remove the screw fixing valve cover, to remove the cover.
  • Page 67 6. Remove left side plate Remove the screws fixing left side plate and condenser support board, to remove the left side plate. left side plate 7. Remove cross fan blade Remove the screw nut fixing cross fan blade, remove the gasket and spring cushion, to remove the cross fan blade.
  • Page 68 9. Remove electric box assy cover electric box Remove screws fixing electric box assy and mid-isolation board, loosen the bonding tie, pull off the wiring terminal, lift to remove the electric box assy. electric box assy 10. Remove electric reactor Remove the screws fixing electric reactor, to remove the electric reactor.
  • Page 69 12. Remove mid-isolation board Remove the screws connecting mid-isolation board, chassis and condenser assy, to remove the mid-isolation. mid-isolation board 13. Remove four-way valve assy four-way valve assy Welding cut the spot weld of four-way valve assy, compressor air suction/discharging valve and condenser pipe outlet, lift to remove the four-way valve assy.
  • Page 70 15. Remove big and small valve assy Remove screws connecting condenser assy and chassis, to remove the condenser assy. Remove the screws fixing big and small valve, to remove the valves. small valve big valve condenser assy...
  • Page 72 Pipe Pipe cutter Leaning Uneven Burr Pipe Shaper Downwards Union pipe Pipe Hard mold Expander Pipe Smooth surface Improper expanding leaning damaged crack uneven surface thickness The length is equal...
  • Page 76 COUNTRY STAR SDN BHD (437305-H) - MALAYSIA www.solarcoolairconditioner.com For product improvemet, specifications and appearance in this manual are subject to change without prior notice.

This manual is also suitable for:

Sci-12g